LMH6517 Series
Low Power, Low Noise IF and Baseband Dual 16 bit ADC Driver With Digitally Controlled Gain
Manufacturer: Texas Instruments
Catalog
Low Power, Low Noise IF and Baseband Dual 16 bit ADC Driver With Digitally Controlled Gain
Key Features
• Accurate, 0.5dB Gain Steps200Ω Resistive, Differential InputLow Impedance, Differential OutputDisable Function for Each ChannelParallel Gain ControlSPI Compatible Serial BusTwo Wire, Pulse Mode ControlOn Chip Register Stores Gain SettingLow Sensitivity of Linearity and Phase to Gain SettingSingle 5V Supply VoltageSmall Footprint WQFN PackageKey SpecificationsOIP3: 43dBm @ 200MHzNoise figure 5.5dBGain step size of 0.5dBGain step accuracy: 0.05dBFrequency Range of 1200 MHzSupply current 80mA per channelAll trademarks are the property of their respective owners.Accurate, 0.5dB Gain Steps200Ω Resistive, Differential InputLow Impedance, Differential OutputDisable Function for Each ChannelParallel Gain ControlSPI Compatible Serial BusTwo Wire, Pulse Mode ControlOn Chip Register Stores Gain SettingLow Sensitivity of Linearity and Phase to Gain SettingSingle 5V Supply VoltageSmall Footprint WQFN PackageKey SpecificationsOIP3: 43dBm @ 200MHzNoise figure 5.5dBGain step size of 0.5dBGain step accuracy: 0.05dBFrequency Range of 1200 MHzSupply current 80mA per channelAll trademarks are the property of their respective owners.
Description
AI
The LMH6517 contains two high performance, digitally controlled variable gain amplifiers (DVGA). It has been designed for use in narrowband and broadband IF sampling applications. Typically the LMH6517 drives a high performance ADC in a broad range of mixed signal and digital communication applications such as mobile radio and cellular base stations where automatic gain control (AGC) is required to increase system dynamic range.
Each channel of LMH6517 has an independent, digitally controlled attenuator and a high linearity, differential output amplifier. Each block has been optimized for low distortion and maximum system design flexibility. Each channel can be individually disabled for power savings.
The LMH6517 digitally controlled attenuator provides precise 0.5dB gain steps over a 31.5dB range. On chip digital latches are provided for local storage of the gain setting. Both serial and parallel programming options are provided. A Pulse mode is also offered where simple up or down commands can change the gain one step at a time.
The output amplifier has a differential output allowing large signal swings on a single 5V supply. The low impedance output provides maximum flexibility when driving filters or analog to digital converters.
The LMH6517 operates over the industrial temperature range of −40°C to +85°C. The LMH6517 is available in a 32-Pin, thermally enhanced, WQFN package.
The LMH6517 contains two high performance, digitally controlled variable gain amplifiers (DVGA). It has been designed for use in narrowband and broadband IF sampling applications. Typically the LMH6517 drives a high performance ADC in a broad range of mixed signal and digital communication applications such as mobile radio and cellular base stations where automatic gain control (AGC) is required to increase system dynamic range.
Each channel of LMH6517 has an independent, digitally controlled attenuator and a high linearity, differential output amplifier. Each block has been optimized for low distortion and maximum system design flexibility. Each channel can be individually disabled for power savings.
The LMH6517 digitally controlled attenuator provides precise 0.5dB gain steps over a 31.5dB range. On chip digital latches are provided for local storage of the gain setting. Both serial and parallel programming options are provided. A Pulse mode is also offered where simple up or down commands can change the gain one step at a time.
The output amplifier has a differential output allowing large signal swings on a single 5V supply. The low impedance output provides maximum flexibility when driving filters or analog to digital converters.
The LMH6517 operates over the industrial temperature range of −40°C to +85°C. The LMH6517 is available in a 32-Pin, thermally enhanced, WQFN package.
